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Only disable munmap(2) by default on 64-bit Linux.

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This reduces the likelihood of address space exhaustion on 32-bit
systems.

This resolves #350.
This commit is contained in:
Jason Evans 2017-04-17 15:54:53 -07:00
parent c43a83d225
commit a01f993077
2 changed files with 11 additions and 5 deletions
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8
configure.ac
View file

@ -557,7 +557,9 @@ case "${host}" in
AC_DEFINE([JEMALLOC_THREADED_INIT], [ ])
AC_DEFINE([JEMALLOC_C11_ATOMICS])
force_tls="0"
default_munmap="0"
if "${LG_SIZEOF_PTR}" = "3"; then
default_munmap="0"
fi
;;
*-*-linux* | *-*-kfreebsd*)
dnl syscall(2) and secure_getenv(3) are exposed by _GNU_SOURCE.
@ -568,7 +570,9 @@ case "${host}" in
AC_DEFINE([JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY], [ ])
AC_DEFINE([JEMALLOC_THREADED_INIT], [ ])
AC_DEFINE([JEMALLOC_USE_CXX_THROW], [ ])
default_munmap="0"
if "${LG_SIZEOF_PTR}" = "3"; then
default_munmap="0"
fi
;;
*-*-netbsd*)
AC_MSG_CHECKING([ABI])